This isn’t a big deal, I don’t think, just more of a curiosity. I have noticed that several of my frag plugs are turning this weird rusty red color where they’re making contact with the glue & rocks. I’m using BSI Insta-Cure IC-Gel glue & it happens with all different types of frag plugs. The rocks are CaribSea LifeRock. Tank is 7 months old. I’ve noticed this on probably 5 or 6 frags that I’ve had to move for various reasons.
Anyone else ever experience this? Is it anything I should be concerned about?
![image.jpg image.jpg](https://www.reef2reef.com/data/attachments/2565/2565446-d58790914a00f73d9c740d5c48b4cf24.jpg)
Anyone else ever experience this? Is it anything I should be concerned about?
![6D7D5C45-1D0D-46C7-A956-BFFD803178D2.jpeg 6D7D5C45-1D0D-46C7-A956-BFFD803178D2.jpeg](https://www.reef2reef.com/data/attachments/2565/2565444-486493eecaa51fbb0329cc461af1d20a.jpg)
![image.jpg image.jpg](https://www.reef2reef.com/data/attachments/2565/2565445-40dfadcf3247ea5cbf9d00f58a6af2fa.jpg)
![image.jpg image.jpg](https://www.reef2reef.com/data/attachments/2565/2565446-d58790914a00f73d9c740d5c48b4cf24.jpg)